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How do I execute a string containing Python code in Python?
... setattr(x, s, 42) is the right syntax. Surprised it took so long for that error to be caught. Anyway, the point is that getattr and setattr are an alternative to exec when all you want is to get an arbitrary member, looked up by string.
– ShreevatsaR
Oct 11 '1...
Why would anyone use set instead of unordered_set?
...r<int>> two(){
//unordered_set<vector<int>> s; // error vector<int> doesn't have hash function
unordered_set<vector<int>, VectorHash> s;
s.insert({1, 2});
s.insert({1, 3});
s.insert({1, 2});
for(const auto& vec:s)
cout<&...
How to show the “Are you sure you want to navigate away from this page?” when changes committed?
...
=> 500 Internal error. That's why links are deprecated on SO. Downvoted until fixed.
– Loïc
Sep 19 '14 at 10:15
...
Detecting iOS / Android Operating system
... @feeela sometimes the feature is something like being able to install apks, which isn't possible to detect.
– Daniel Lubarov
Mar 7 '16 at 21:11
2
...
Is null check needed before calling instanceof?
...B b) {
// Overloaded version. Would cause reference ambiguity (compile error)
// if Test.test(null) was called without casting.
// So you need to call Test.test((A)null) or Test.test((B)null).
}
}
So Test.test((A)null) will print a instanceof A: false.)
P.S.: If you are hiring, pl...
Where to learn about VS debugger 'magic names'
...moves, we emit debug info for it anyway into the PDB. We stuck the suffix __Deleted$ onto such variables so that the debugger knows that they were in source code but not represented in the binary.
Temporary variable slots allocated by the compiler are given names with the pattern CS$X$Y, where X i...
Get current time as formatted string in Go?
...s long as it works I suppose it doesn't matter as long as we don't make an error when coding it. I guess they didn't see fit to provide a constant for that format, and match the string pattern.
– brianoh
May 5 '11 at 3:20
...
Eclipse cannot load SWT libraries
Every time I try to open Eclipse in Ubuntu 12.04 I get an Unsatisfied Link Error and it will not open. I have recently installed the java JDK and Android SDK, could this be the problem? I followed this tutorial .
...
ASP.NET MVC: Custom Validation by DataAnnotation
...is.MinLength)
{
return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName));
}
return null;
}
}
and then you might have a view model and decorate one of its properties with it:
public class MyViewModel
{
[CombinedMinLength(20, "B...
How should I log while using multiprocessing in Python?
...w uses a queue for correct handling of concurrency, and also recovers from errors correctly. I've now been using this in production for several months, and the current version below works without issue.
from logging.handlers import RotatingFileHandler
import multiprocessing, threading, logging, sy...